SOLUTION: What are the remaining angles for Triangle of A = 25°, b = 28, a = 18? sin(25)18=sin(b)28 18sin(b)=28sin(25) sin(b)=28sin(25)18 b=0.71737138

Algebra ->  Test  -> Lessons -> SOLUTION: What are the remaining angles for Triangle of A = 25°, b = 28, a = 18? sin(25)18=sin(b)28 18sin(b)=28sin(25) sin(b)=28sin(25)18 b=0.71737138      Log On


   

Question 1076710: What are the remaining angles for Triangle of A = 25°, b = 28, a = 18?
sin(25)18=sin(b)28 18sin(b)=28sin(25) sin(b)=28sin(25)18
b=0.71737138
Answer by josgarithmetic(39617) About Me  (Show Source):
You can put this solution on YOUR website!
The best first step, if your diagram and variables labeling are done in the common way, should be:

sin%2825%29%2F18=sin%28B%29%2F28

Use the proper variables regarding case-level. system%28B%3C%3Eb%2CA%3C%3Ea%29.
They each mean different things.

NOW, solve for B.
sin%28B%29=28%2Asin%2825%29%2F18

sin%28B%29=%2814%2F9%29%2A%280.422618%29

sin%28B%29=0.657406

ArcWhoseSine%280.657406%29=highlight%28B=41.1%2Adegrees%29.